Table 5. Temporal comparisons of percent composition of males surveyed in belt transects by grazing treatments and research periods early (1987- 1989) and current (2001-2002) at the Central Grasslands Research Extension Center, Streeter, ND.

 

Grazing Treatment

 

Twice-over Rotation

Season Long

Short Duration

Idle

Species

Early

Current

Early

Current

Early

Current

Early

Current

Clay-colored Sparrow

Grasshopper Sparrow

Chestnut-collared Longspur

Savannah Sparrow

Brown-headed Cowbird

Red-winged Blackbird

Western Meadowlark

Eastern Kingbird

Common Yellowthroat

Bobolink

American Goldfinch

Baird’s Sparrow

Common Grackle

Willet

Yellow Warbler

Western Kingbird

Northern Harrier

Upland Sandpiper

Marbled Godwit

Killdeer

Common Nighthawk

Horned Lark

Lark Bunting

Yellow-headed Blackbird

Marsh Wren

Sedge Wren

13.8

18.8

2.3

2.77

12.3

14.3

4.9

2.9

2.4

4.6

0.0

4.4

0.0

0.9

0.0

0.0

0.4

1.5

1.1

1.8

0.7

2.9

5.3

1.9

0.0

0.3

19.5

30.3

25.1

5.6

3.6

0.5

6.7

7.9

0.0

1.5

0.5

1.5

1.0

0.5

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.5

0.0

0.0

0.0

0.0

24.9

24.0

0.5

1.7

7.0

9.4

6.0

2.3

5.6

4.7

0.0

4.8

0.0

0.1

0.0

0.0

0.0

1.8

0.3

0.4

0.0

0.1

4.3

0.0

0.0

1.8

47.5

16.9

0.8

10.2

7.6

2.5

2.5

3.4

5.1

0.0

0.8

0.0

0.0

0.0

0.0

0.8

0.8

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

20.9

12.6

0.0

1.1

10.2

17.8

6.2

0.9

9.1

4.9

0.0

1.7

0.0

0.4

0.0

0.0

0.9

2.1

1.9

0.9

0.2

0.2

7.1

1.1

0.0

0.0

45.5

19.5

0.0

9.7

9.2

6.5

2.2

1.6

3.2

0.5

0.0

0.0

0.0

0.5

0.0

0.0

0.0

0.5

0.5

0.0

0.0

0.0

0.0

0.0

0.0

0.0

30.9

8.4

0.0

2.3

4.6

12.7

3.5

3.4

15.0

4.8

0.0

1.1

0.0

0.0

0.0

0.0

1.6

0.2

0.0

0.2

0.0

0.2

1.1

1.4

0.2

7.9

44.7

11.8

0.0

5.3

2.6

11.8

0.0

7.9

2.6

10.5

1.3

0.0

0.0

0.0

1.3

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0